pprakash

> @pierrepinon Sure, here you go. I used a [docker](https://github.com/noonien/docker-openwrt-buildroot) build environment and only copied out the sysupgrade bin at the time. The only differences (aside from the patch) from...

Fixed the leading 0s. Now the transmit and receive debug values are similar. But still getting 0xE4 error. Server ( ESP8266 ) ` 3 0 E 0 2 A4 B3...

Finally tweaked below setting in ModbusSettings.h on both ESP8266 & ESP32 and got it working. `#define MODBUSRTU_REDE_SWITCH_US 1200` and below setting in ESP32 `#define MODBUSRTU_FLUSH_DELAY 4`

Still the reads are not 100% successful, '0xE4' are reported at random points leading to invalid data being read. In debug, I see 8266 is sending the data, but ESP32...